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using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Xml.Linq;
using Ogdi.InteractiveSdk.Mvc.Models;
using Ogdi.InteractiveSdk.Mvc;
using Ogdi.InteractiveSdk.Mvc.Repository;

namespace Ogdi.InteractiveSdk.Mvc.Repository
{
    /// <summary>
    /// This Repository will have methods to manage the Container.cs model.
    /// </summary>
    internal class ContainerRepository
    {
        #region Public Methods

        /// <summary>
        /// Fetches all the containers and returns the list of Container objects.
        /// XML Format:
        ///     <Root tableName="AvailableEndpoints">
        ///         <properties>
        ///             <alias>dc</alias>
        ///             <description>District of Columbia</description>
        ///             <disclaimer>...</disclaimer>
        ///         </properties>
        ///     </Root>
        /// </summary>
        /// <returns>List of Container objects</returns>
        internal static IList<Container> GetAllContainers()
        {
            // Declare List<Container> that will have list of Container objects.
            List<Container> containerList = null;
            // 1000 is the max results Azure Table Storage allows per query                
            XElement containerXML =
                Helper.ServiceObject.GetData("", Resources.ContainerTableName, null,
                Convert.ToInt32(Resources.ContainerPageSize, CultureInfo.InvariantCulture),
                null, null);
            // Define containerList
            containerList = new List<Container>();
            if (containerXML != null)
            {
               containerList = (from element in containerXML.Elements("properties")
                                 select new Container
                                     (
                                            element.Element("alias").Value,
                                            element.Element("description").Value,
                                            element.Element("disclaimer").Value
                                    )).Distinct().ToList<Container>();

                // Sort the container list based on Alias
                containerList.Sort();
            }
            // Return containerList
            return containerList as IList<Container>;
        }

        #endregion
    }
}
